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/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef HICN_PROTOCOL_IPV6_H
#define HICN_PROTOCOL_IPV6_H
#include "../common.h"
/*
* The length of the IPV6 header struct must be 40 bytes.
*/
#define EXPECTED_IPV6_HDRLEN 40
typedef struct
{
union
{
struct
{
u32 version_class_flow; /* version, traffic class and 20 bits of flow-ID */
u16 len; /* payload length */
u8 nxt; /* next header */
u8 hlim; /* hop limit */
};
u8 vfc; /* 4 bits version, top 4 bits class */
};
ip6_address_t saddr; /* source address */
ip6_address_t daddr; /* destination address */
} _ipv6_header_t;
#define IPV6_HDRLEN sizeof(_ipv6_header_t)
static_assert (EXPECTED_IPV6_HDRLEN == IPV6_HDRLEN,
"Size of IPV6 struct does not match its expected size.");
/*
* The length of the IPV6 pseudo header struct must be 40 bytes.
*/
#define EXPECTED_IPV6_PSHDRLEN 40
typedef struct
{
ip6_address_t ip_src;
ip6_address_t ip_dst;
u32 size;
u16 zeros;
u8 zero;
u8 protocol;
} ipv6_pseudo_header_t;
#define IPV6_PSHDRLEN sizeof(ipv6_pseudo_header_t)
static_assert (EXPECTED_IPV6_PSHDRLEN == IPV6_PSHDRLEN,
"Size of IPV6_PSHDR struct does not match its expected size.");
/* Default field values */
#define IPV6_DEFAULT_VERSION 6
#define IPV6_DEFAULT_TRAFFIC_CLASS 0
#define IPV6_DEFAULT_FLOW_LABEL 0
#define IPV6_DEFAULT_PAYLOAD_LENGTH 0
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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